Forcing a piston past the deck by hand risks a chipped or snapped ring, especially on tight-tolerance bores. This tapered compressor sleeve is sized specifically for a 3.780 in. bore, guiding the piston in evenly so the rings stay compressed and seated all the way around during installation.

Proform 67470 Tapered Ring Compressor Features:

• Fits 3.780 in. piston bores
• Tapered sleeve design compresses rings evenly for smooth piston installation
• Machined from aluminum
• Red anodized finish
• Suited for use on engine blocks assembled with studs
• Sold individually